The potential use of biochar to enhance soil properties and plant growth performance

العناوين الأخرى

إمكانية استخدام الفحم الحيوي لتعزيز خصائص التربة و أداء نمو النبات

مقدم أطروحة جامعية

al-Sub, Bayan Zaid

مشرف أطروحة جامعية

al-Mahadin, Atif Yasin
Muhawish, Usamah Isa

أعضاء اللجنة

al-Makhadimah, Ibrahim
al-Absi, Khalid Musa
Uways, Said Juzif

الجامعة

جامعة مؤتة

الكلية

كلية الزراعة

القسم الأكاديمي

قسم الإنتاج النباتي

دولة الجامعة

الأردن

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2017

الملخص الإنجليزي

This study was conducted to determine the effect of biochar which produced from different feedstocks (broccoli and olive trees pruning residues) by pyrolysis process on plant growth and soil properties, through three separate experiments.

The first experiment was the laboratory experiment, in which the biochar produced from the broccoli residues was used to study the effect of biochar in improving soil properties and its ability to help the soil to retain elements during the leaching process, using the soil column with five levels of biochar (control, 0.5, 1.0, 2.5 and 5.0% by weight) in triplicates.

The different treatments were provided with the same level of water and (NPK) fertilizer and the leachates collected every four hours for three days.

The second experiment was carried out in plastic pots under greenhouse condition at the Faculty of Agriculture, Mu'tah University between September and November, 2015 on tomato and bell pepper plants.

The biochar produced from the broccoli residues was used in five levels (control, 0.5, 1.0, 2.5 and 5.0% by weight).

The third experiment (field experiment) which was conducted at Ghor al-Safi, NCARE research station in the Jordan Valley between September 2016 and January 2017, on tomato and bell pepper plants using five levels of biochar produced from the olive pruning residues (control, 8, 16, 30, 40 ton/ha).

The results of the laboratory experiment showed that the addition of biochar resulted in a significant decrease in the leachate content of nitrogen on the first day and the beginning of the second day and then the decrease was insignificant, while the concentration of potassium in the leachate was significantly increased with the level of biochar during the experiment period, as for phosphorus, it increased significantly by 1 and 2.5% levels in the first three samples, then there was a significant decrease by increased the biochar level.

The pots experiment results showed that addition of biochar resulted in a significant decrease in fresh and dry weights of shoots, and dry weight of roots in tomato and pepper plants at 2.5 and 5%, also increased the chlorophyll content in tomato plant at 0.5%, while bell pepper plant exhibited a significant decrease in the chlorophyll content at the 5% level.

Proline content in both plants increased significantly with the increase in the level of biochar, while there was no significant effect of biochar on the leaf area and the relative water content in tomato and bell pepper.

As for the leaf minerals content, the concentration of potassium, phosphorus and manganese in the tomato plant increased at 0.5% level and copper concentration increased at 1% level, while the level of potassium, phosphorus and calcium increased significantly in pepper at 2.5%.

The soil pH and electrical conductivity values significantly increased with the increase in biochar level.

The results of the field experiment showed that addition of 30 and 40 tons/ha of biochar resulted in a significant decrease in the fresh and dry weight of the roots in both plants and the fresh and dry weights of the roots in bell pepper.

Leaf chlorophyll content in tomato plant was not significantly affected by the addition of biochar, unlike bell pepper, which decreased significantly at the high level of biochar.

The leaf relative water content in tomato leaves decreased significantly at 30 tons/ha and did not significantly affect bell pepper.

The productivity of both plants was not significantly affected by the addition of biochar.

The results showed that leaf nitrogen and phosphorus content of tomato and bell pepper leaves phosphorus content was lowest in the control and at 8 tons/ha treatment.

The fruits mineral contents increased significantly with biochar addition in both plants.

Addition a different level of biochar significantly affected pH and the electrical conductivity of the soil planted with tomato and bell pepper, where both of them were significantly increased with the increase in the biochar levels.

التخصصات الرئيسية

النبات

عدد الصفحات

64

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-780506